S 5 over Main Creek
Poor Condition87 years old309 vehicles/day
Location
| State | Montana |
| County | Sheridan |
| Location | 9m SW Westby |
| Carries | S 5 |
| Crosses | Main Creek |
| Coordinates | 48.81711, -104.23653 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 7 (Good) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 97.1 ft (29.6 m) |
| Max Span | 19.0 ft (5.8 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 233.8 sq m |
| Main Spans | 5 |
| Year Built | 1939 |
Traffic
| Avg Daily Traffic | 309 (2023) |
| Truck Traffic | 26% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00030014+03181 |